These M16 Bolt Carrier Groups feature a shot-peened bolt with extractor booster. The Bolt Carriers are MPI tested, chrome lined, and have properly staked gas keys. Shot-peened Bolt, Extractor Booster, MPI Tested, Chrome Lined Carrier, Properly Staked Gas Key 

Brand: Daniel Defense
Caliber / Gauge: 5.56 NATO
Carrier Style: M16 / Full-Auto
Platform: AR-15
Bolt Finish: Phosphate
Carrier Finish: Phosphate
Extractor: O-Ring
Gas Key: Staked
Magnetic Particle Inspection: Yes
High Pressure Tested: No
Weight: 11 oz